Type-writing machine.



N. H. ANDERSON TYPE WHNNG MACHINE,

MPUCATIQH mm1 wwf 12, lam.

1.;52,382. l Patented Jan. 8, 191g 3 SHEETS-SHEET 2.

WTNESSES:

" ArmHNEw/a N. H. ANERSQN,

TYPE WRITING MAHNE.

fwvmmmw mw lume i2, :914.

l`ai,tented Jan. 8, 1918.

3 SHEETSI-SHEEI 3 INI/ENIGH lil the shaft is provided with the usualrack and pinion ,mechanism (not Shown) for controlling the letter-space movement of the carriage.7 as above explained. Escupement mechanism 6, mounted, upon e suitable rocker .7, boasts with the teeth of the eseorpenient wheel 4 at earch inteinsittent ae-- tion of any type estimoe 'or the space-bar. This i'oekei member 7 eoimeetetl by mech' einem. about to be deeeibed iu detail, with f1. sone-'einer 8 ioeeteri the front 01' the in no etfljeeent the keybof-ufd, or with the univeieei bei' 9 positione. beneath the hoy l5, shc'lwn m Wing. i... in Suche mem s to milnit inep -nient operation 'tbeeoig thai the .key levers 10 may be 7 l.flep'ieeeeo' to :attuate eunivereel but S' miei the eseepelnent n; 1 E independently of the epeoebm' key 8, and viee versa.

Taking up construction of the rocker bei' hoi eseonatefl connecting parts pement wel L' is mounted. i'iotion enti Carries et ite fmmaid emi. eet (logs (not l ii} to? ce? v with the es- .oel 4i, the eeen "lent rocker 7 is pi'ovaie with two fiownweri extending arms if); and En, one at each Sitte? ioosey con nested. with the spaeeber meehsmiem through one sitio the univereei bei* mechanism through the other', by eniteble slotted links en, i5, .ieegectiveiy .et the upper part eapement v of th". eeeepement braeket .is positione. en 7 eh eemetei hrfiehet 18 for the -l e iivfying 'ions efgueting means og; 'z f gni the eseepement.

etive position of W it? is pi'ovided 1 which seew glie-oe by eniteif.. iooh: .out 20. this eeiew it# e goteo. to enen? the :auxiliary bracket iiietment in or ont oonti'ols the n of the om ment dogs in te teeth of the finement- Wheei, eefmpement :rocher being helf in normali poeition by the zie-tion. of an escape'- ment mii'usting Spring which is securely nstenef to eemjpement hooker et its lower entii enti ie .gijrovieei et upper end with ifoi iii? bearing on mi enlarged plate on. the endet". an eclueqfng screw 23 oeriefi by et? t the auxiliary brochet 1S, e cheek not ie peovidefl for holelingij the @dieet-eti position.

Widen :.t key `iev nreeeeti ilo. operw tion with ta eonseqoent downward movement oit' the 'fmivereei bei., tir lint: 15 moves forward, but :i the rocken .l member t' 'onti the liest menen of :i longeJ intimal eiot ,t its, ein? ie taken up by po; ve en ,gement oi screw l? with befxefi feimi-...r GQ., Fig.

:aangaan tion takes placeE the eeeepement rocker rotetes with theiearwmd movement of the link until the Stop screw i9 comers in con tact with the bi'ecket 18. At this point the movement of the esenpement rocker ends; that is, it bee been'ret-uined to its normal or initial position. and continued movement of link 15 ie permissible' by the slot in. end poi 'tion of-link i5, allowing the universel bar l9 to returnto its noimal position. It ie understood that in nomei position of the 'various parte the stop seew 17 is not in Contact with screw corresponding With :ibut ment screw 62 in Fig. 7. It' stop screw 17 normally contacted with the abutment oi. arm 13, on objeetionebie clicking; would be caused when the eseapement retorned to normali po sition eftei' actuation bythe epaee bur. lo other Wordebotb. eooneetionl and connection i4 have :t slight forward. movement pref vious to engaging the abifltment on arms l2 The escape-ment adjusting spying 2l tends to constantly votate the escape/ment rocker 7, end since the link 15 is connected 'to 'the universel ber which moves with the key le vers anni type attiene; the esljuetment of thie tension spring elows of setting the tension 1n eue-h n manner that .lesive touch may be had on the keys; in keyboard of the I.

machine. Tiff spring 2l .not in operation turing the tiret @het of the stfoke or prim* to tbe printing i'vlonient, and, therefore intxo- (luces just et that moment e s sing tension of considerable force in addition. to that normeily and fronstantly had from the unin versal ber spring. 'The actual efeetof this is to put into the type action a feeling of life, which is desirable in getting the proper touch. Thus, a very' ,lightinitial touch is.

secured on the keyboard, 'emi it is only when the type actions have acquired the aeoe1erated motion and, momentum, that the escapement mechanism is picked. up und. actuated...

To a front tensveree brac-e 30 in the frame of the machine are fasteneci. bmeketfs 31 proN4 vided with pivotsoiewe 32 forming bearings for the 'universei rook shaft Arms 34 and 35 ae Secure/ti. one at each end to this shaft, and their opposite ends are secured to universal bei' 9 extending below the key levers transversely of themaehine. This universal bei merle up of e felt pad, seteeeureiy in e' channel bei' ae olearly shown in Fig. To the universal rock shaft 33 is also secured an arm B6 lcauses the escapcment rocker T to which is pivotlink or pull wire l5, which in turn is connected at its opposite end to the escapement rocker, as above explained. It will be seen, therefore, that pressing any key lever, such as 10, it will rock or tend to force the universal bar il jiositiouedthere` below, downward, thus rotating7 the imiver sal rock shaft 33 and moving the linl; l5 forA ward toward the keyboard. This. iny turn, to be thrown upward into its active position. A release oi' the key levers permits the parts to tomplete their cycle of operation and return to normal inactive position.

The mechanism for actuating the escapement rocker from the space bar or key 8 independently of the universal bar includes the space bar positioned at the front of the machine and usually below and in front of the keyboard. This bar is fastened to the forward ends of arms e() assembled upon a rock shaft ll1 mounted upon suitable adjustable pivots 42 near each end. These pivots are preferably in the fhrm of pivot screws provided with check nuts 423, as shown.I and are mounted in brackets assembled on the crossvbra'ce 30 of the frame of the machine. An upwardly extending arm '4.6 is also mounted upon the rock shaft l1 and. is fastened permanently thereto taper pin, or the like, 4.7, and is connected at its up er end to the link 14, extending fore anda t of the machine.

A preferred orm of connection for both the links 14 and 15 comprises a hardened stud riveted over at the end in the link and passing through a sembled fast on the upwardly projecting arm 46, as shown in Fig. t. T he stud at its outer end has a small pin or point 53 which is adapted to engage a hole in a which clip is adapted'to slide, by means of its turned-over ears, on the link-to engage ordisengag'e the point 53 in onder to lock ally connected the the link in engagementwith the arm.

` The tension or touch of the space bar may be adjusted by providing a return spring 55 which engages at one end a hole in the cross bar 30 of the frame of the machine, and at :its other end a hole in an adjustable collar 56 which may be rotated around the shaft 41 to secure anv desired spring tension, after which it is locked in place by means of a set 'screw 57. l

The link 14 extendsV toward the rear of the machineand engages the downwar ly projecting arm 12` on the rocker member, as clearly shown in Fig. 1. The actual connection comprises a separate member 58 secured to .the end of' the link 14 provided with a slot .and offset end 59 carrying an adjusting A shouldered screw l62 secured tothe downwardly extend` ingmarm 12 bf the rocker member passes p by means of a bushing 51 which is as,

clip 54,'

loosely through this slot and the amount of lost motion therein is controlled by the position ol the adjusting screw 60, being similar to the connection of the link 15 on the opposite side.

When the key levers of the machine are being used in contradislinction to the operation ol the space bar, the escapemeut mecha nism is connected therewith through the universal bar l) and intervening link 15, as previously described, the escapement rocker completing its cycle ol operation to give a regular intermittent. letter-feed movement to the carriage. Under these conditions of operation. the shouldered screw (32 which is in the lou-er end olf' the rocker arm 12 slides back and forth in the slot provided at the end of the link 14v connecting the rocker with the space bar mechanism, thus allowing movement. oi" the escapemcnt rocker without :movement ol" the space bar mechanism.

When the space bar, however', is operated,

universal bar mechanism.

rIhis mechanism provides means by which the space ha r can be actuated without more ment of the universal bar, and also provides means by which the space bar mechanism may be timed to actuate the escapcment at any desi red point; that is, u longer or shorter dip of the space bar belore tripping the escapement by adjusting the screw (i0 passing through the turned-over end 59 oi'f the connecting link 14. This is of great ad vantage, since there is some diiference of opinion between operators as to a desirable space bar action, someoj'ierators preferring the longer dip and other operatorsl preferring avery short dip with great sensitiveness of ustment.

In order to stop the downward movement' of the space bar 8 after the adjustment'oi'- the screw 60,suitable stops 65 sire provided under the `space bar, for each of which there is an adjusting screw GG provided at its top with a pad of felt or some other resilient silencing means checked in place with a nut 67. The up or return moyement of the space bar is stopped by positioning upon the under' side of the space bar a plate 7 0 having a downwardlyprojecting stud 71 which passes through a relatively large hole in a second plate 72 .mounted on the frame of the machine and held in place by check nuts 67 threaded upon the screw portions 66 of the silencing pads limiting the down Ward movement of the space bar. This stud 71 is threaded. at its lower end, and carries two knurled nuts 73 and 74, one of which is adapted to not is a lock for the other when placed in properly adjusted position. Between the nut 74 and the plate 72 limiting its upward movement is positioned a felt washer 75 :for the purpose of eliminating any noise et this point. i

The upward or normal position of the space bur is etopped and regulated by the .adjustment of these nuto. Since the stop forl the bur is neer the bnritselit rather than close to the pivot or ehnit upon which it turns, there 'is little or no teiuflency for re bound. The structure, furtliemnore, provides e means for adjusting' thi-5 normal po sition of the Space loer in correct relation to the keyboard. 4

In order to provideii silent fio-tion for the universal bar, as Well as to provide :i more desirable touch for the key levers, there is provided, inthe central part of the machine, e universal har stop, as shown more clearly in l and 3, designed to retard es little as possible the initial downward movement el the universel bar, yet afford et the same time a cushion et the end of the Y stroke which, incidentally, aids in the initial 4 return or the upward movement of the niversa) bar. The present structure is designed to eliminate the friction and drag upon the universel bei' producing a. more or less sluggish action. The universel bar, above explained, ie carried on Suitable arme 34 and 35, mounted upon the universal rooie; shaft 33 and is 'adapted to coast withv fi'bell. crank lever 80 mounted upon e stud 8l sind eonneeted et its short end. 82 with e spiral Spring S3 odjustably connected at its opposite end to a relatively fixed portion of the :treme of the machine, by adjusting eerew 84 provided with e suitable form of cheek lint 85, At the upper portion of the bell @rank lever is a bent ear 86 which is adapted to engage another oppoeitely bent ear 8T onI e second bell crank lever 89, 'which is also spring-controlled by e: spring 90, adjustably mounted at 91, similar to ti le spring 83 above mentioned, but of heavier tension.

Both bell crank levers are carried. rby e bracket' 92 ettaeh'edto the frame of the :machine The normal or initial position inf the bell crank level- 89 under tension of v"ite spring 9 0 is controlled by an adjusting screw 93 and nut Qipess-ing through an ear 95 on the lever 89 endvengeging the breeket of the universal hai', and ne thebell crank: lever 8U is moved downward under 'the eo- In operation, the Spring 83 is only `ezt 1'. eulieient tension to allot-d e prompt return responding ear 87 on the adjacent bell crank lever,1 thereby tensioning the heavier spring 9() attached tothe latter. Additionaleprin r resistance thus introduced at the end olli the stroke, not only giving e. cushioning 7U effect or feel in the key lever.l but aileo 'giving a rapid initial kiel: back or upward return movement to the universal ,in The point et which this heavier spring tension is inn 'trodueed or picked up by the hell emol( 7 lever yis adjustable through the adjusting Screw 98 above mentioned.

As Shown more Clearly in Fig.' E, the heli crank lovers 8() und 559 are mounted on buehinge 96 to zziiford :i proper hearing on the 8 etude Supporting; them and are retained is; place by spring wire collare 97; 'ilie full downward movement et the universal loer is arrested hy the stop or eushioift 98 having an adjustable but nol'uuilly lied relation to, the frame of the machine. ln e-etuel prec tice tl1esestop5 are not always engaged by the universel bei', as the tension of the heavier spring utteel'ied -to 'the bell emule lever ie suffieient to iiiford e setieeotory sto s tlio operation and ,method 'et use of this; complete 'ice ere believed to 'be eleer from the elio-ve description. n turtlie': en'A planation thereoit believed to he serv. It will oe einer tliutf.' rocker iS actuated indepen the key levers er the ermeel@ which .are provided. with. uilen,4v which not only perni but oootigilmtes mete of the ineolline in all matter Contained in 'the :above descrip tion or shown in the accompanying drew: ings shall be interpreted .illustmt-ive not in elimitmg' sense Hafv'ing'deseribed my inifentioin whettfl l #claim `as new, and desire to seein-e liettezs [Patent 1e:

n-"a, typewting :mieliine` 'in eoinhinef' tion5` an .escapan-lent rocker having a pairof fspaeed` errug,` a pair of fore encifei't links -liaving indeliendent loetmotion eonn'eetions with seid arms respectively? and iiziepend zent'bell"crenlzeonneetions lietwe n seid linke .u'niversalvber' and the Leuzee a the Space bar, independent means urging said linke to norn'ial poeitioi'i, and mean-e for tion, anieeeala connections he we the ioelaer, ami. a f op for l con'ipi'ising a" .at 'et and a Raitoi" .tenes mounted thereon having; a logt-motion device therebetween, one of l le'ere nein j einen able b5' the universal bar to aetnate' ,ne other after the universal har has neen cl-.zpressetl a precietermined ainomit..

In a typewriting inzlxeliine, in eorni'finan tion, an eseapeinent rocker, a. universal ber, connections between. the universali har and the rocker, and a Stop for the :mii/ere l. bar, comprising; bracket, a mi? o'l leva-1re @ai the `on hatingl between, one o saici levers being; operable hv the universi: har to attente the ntl l the nniw har has; been preoeterminefl am nt and annoia .ng aetnation of eaiil other lever,

'n a Writing machine, in combina tion., an es enement resilier, a universal han,

.ini i' ersal J.e universia eonneetioi inetween the uni har anti the rockt y, anti a eten for the 'universal har,

bv the irst hell crank lever nml means for reulating the tension of the spring.

In a t'yif'penfriting machine," in Combina,- tion, an esea'nenient rocker, a universal har, connections het i, en the' universal bar and the ."rodtei,4 and a eten for the universal har., oomprising a. T-elnipel inaeket, a lever mounted upon each sainte of eaid bracket and an eseapeineni.; rocker, a fore enrl .att'

' a foatinotion sleviee there, oren having an ear bent toward the other, one of said levers. being adapted to eoaetwith said universal liar and be moved thereby until its ear eoaete with the ear oit said. eer-,ond lever, antl a spring connected with said second lever adepte to he tensionml 'after said entre are moved into Contact.

fin a tyiewriting machine, in combina tion, :in eeeapenient rocker, a nnirereal bar, contentions between the universal bar and tlm roeler, and a stop for the universal liar, mirnprising a bracket, a pair of movable ineinbere mounted thereon, a spring connected with each of said members, one of said members being Connected with the universal har for actuation thereby, and a lost-motion devine between saidv members adapted to renee a movement of the seeoncl Inen'iber alter eaifil. iirst member has been .moved a predeterininerl, distance,

21. in a typewriting machine, in combination, an eseaiieanent rocker, a, universal bar, :in ogjera e connection therebetween, reeilient .mefins tenfling to oppose and limit eetna ion of said universal liar with a vary ing.; i ee ahrrnjtly augmented adjacent the limit: of movement of the latter, and ineens 'for regulating the augmentation ol said force Without varying the period of augmentation.l

1G, ln a typewriting machine, in combination, an eeeapement rocker, a universal bar, an operative connection therebetween, resilient means tending to oppose and limit actuation of said universal liar with a varying force abruptly augmented during'the .tlnai movement of the latter, and ineens for 'arying the period of augmentation of said la a tfpewriting machine, in combi n, an escapement rocker, a universal har, inoperative connection therebetween, reailient means tending to oppose and limit actuation of said-universal bar With a vary-- ing; farne abruptly augmented during the iin-ai movement of the latter, and means for varying the .eriod and. amount of augmen tation of seriele) Loree.

.152, ln a typewriting machine, in combination, an eseapement rocker, a universal bar, an operative connection therebetween, re silient means tending to oppose and limit aetnation of said universal bar with a Vary- 'ing force abruptly augmented during the inal movement of the latter, and means for Varying independently the amount of said force during the. period prior to and 'after s augmentation thereof.'

bracket secured to .fu'neq and means associated with Said gailemyb'r for limiting the, return movement mi' said space bai'.

131. In a typewrting rmxchne, in combfarli-ion, escapelnu;'mechanislm a Space bm', lte'lvning rneclmrsm for! transmitting motion from una m the eikel, a Stop for Sn' space, bm comprising' a bracket #ecurfed to Ph@ fifa-me of 'the zxmc'hm3 a n amber xwun ed onsad 2pac@ bar passing hmugh sfaei bracke, and miams mfjufstay mounte 011 said membel- :adapted to limit; nmvexinent, .In testmmy whereof I afix .my Signa ture, in th@ wegens@ of two N'ILS EL .ANERSN VWtrwsses il GUK, Enwmm F, SLAVIN. 

